Skin perfusion pressure and healing after below-the-knee amputation

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BACKGROUND The purpose of this study was to investigate if there is a correlation between preoperative measurement of skin perfusion pressure (sPP) and healing after below-the-knee amputation (BtKa) in order to optimize our treatment of the elderly, often fragile patients who represents the majority of amputees in Denmark. METHODS We conducted a retrospective study of 104 consecutive patients, who all had a BTKA at a medium-sized Danish hospital during a period of five years. Sixty-seven of these patients had a preoperative SPP measurement. They were divided into two groups according to their SPP. One group with SPP of or below 40 mmHg, and one group with a SPP above 40 mmHg. Subsequent we conducted a χ2 test to compare the two groups. RESULTS Our primary outcome was an above-the-knee amputation (ATKA) within 90 days after the first amputation, while secondary outcomes were wound debridement (WD) in the operating room or death within 90 days. We found a statistical difference between the two groups of SPP compared to ATKA, but no statistical difference compared to WD or death. CONCLUSIONS There seem to be a correlation between SPP and healing after BTKA, however 13% of our patients with a SPP above 40 mmHg needed an atKa within 90 days of their primary BtKa. to clarify if a sPP of 40 mmHg is enough to predict healing after amputation it is necessary to conduct a prospective study. It is furthermore necessary to determine which factors other than skin perfusion play a part in healing after an amputation.

Original languageEnglish
JournalItalian Journal of Vascular and Endovascular Surgery
Pages (from-to)83-88
Number of pages6
Publication statusPublished - 1 Sep 2017

    Research areas

  • Amputation, Lower extremity, Skin ulcer

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